JP5273843B2 - Assembly method of erection scaffold in stoker incinerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique capable of stably assembling a scaffold in an inclined stoker type incinerator. <P>SOLUTION: The method for assembling a temporary scaffold for a stoker type incinerator, the temporary scaffold including a fire grate part disposed along an inclined surface inclined relative to a horizontal plane, the fire grate part including a plurality of fixed stationary fire grates and a plurality of movable fire grates movable in a furnace longitudinal direction that is a vertical direction along the inclined surface, and the plurality of movable fire grates being supported by a movable fire grate support movable in parallel to the furnace longitudinal direction from under the fire grate part, includes steps of (A) fixing the movable fire grate support so as to limit its movement; and (B) assembling a scaffold on the fire grate part after the step (A). <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a method for assembling a construction scaffold in a stoker-type incinerator, and more particularly, to a method for assembling a construction scaffold in a stoker-type incinerator in which a grate is disposed along an inclined surface.

  An incinerator is used to incinerate garbage. As one of incinerators, a stoker-type incinerator using a fixed grate and a movable grate is known.

  An example of a stoker-type incinerator is described in Patent Document 1. FIG. 1 is a side view showing a configuration of a stoker-type incinerator of Patent Document 1. This stoker-type incinerator has a hopper 101 for receiving garbage and a pusher 102 for supplying garbage to a fire bed 103 of the furnace. The treatment zone on the fire bed 103 is divided into a dry zone A, a first combustion zone B1, a second combustion zone B2, and a post-combustion zone C. For each treatment zone, a wind box 105 for supplying temporary air from below into the furnace is provided, and a temporary air supply mechanism 106 for supplying temporary air is installed in the wind box 105. The ash generated in the fire bed 103 falls on the main ash chute 104 provided downstream of the post-combustion zone C and is collected in the ash pit.

  FIG. 2 is a schematic diagram showing the structure of the fire bed of the stoker-type incinerator of Patent Document 1. As shown in FIG. 2, the surface of the fire bed 103 in each treatment zone is covered with a large number of fixed grate 107 and a large number of movable grate 108. The fixed grate 107 and the movable grate 108 are alternately arranged. Each fixed grate 107 is supported by a fixed frame 109 fixed to the furnace body. Each movable grate 108 is supported by a movable frame 110 that is reciprocally driven in the furnace length direction. With the movable frame 110, each movable grate 108 can reciprocate in the furnace length direction.

  In the above-described stoker-type incinerator, garbage is dispersed on the fire bed as the movable grate moves. Therefore, garbage can be burned efficiently compared to an incinerator in which a movable grate is not used and the firebed does not move.

  By the way, when garbage is burned in an incinerator, the inside of the furnace is exposed to a high temperature. It is also exposed to combustion gases. It is expected that the walls in the furnace will be deteriorated or contaminated by exposure to a high temperature atmosphere or combustion gas. In order to keep the furnace in a normal state, the inside of the furnace needs to be inspected regularly.

  Some incinerators have a height from the fire floor to the ceiling that is too high for humans to reach. In such a large incinerator, an inspection scaffold is provided on the fire bed to inspect the upper part of the furnace. FIG. 3 is a schematic diagram showing a state when the inspection scaffold is installed on the fire bed. A scaffold 111 is assembled on the fire bed 103. The scaffold 111 is formed by, for example, a plurality of single pipes 112 and a work floor 113. A plurality of single pipes 112 are erected on the fire bed, the work floor 113 is disposed in the horizontal direction, and the work floor 113 is supported by the single pipes 112. Thereby, the scaffold 113 is assembled.

From the viewpoint of safety, it is desirable that the scaffold is firmly assembled.
JP 2002-89809 A

  In the stoker type incinerator, unlike the type in which a plurality of grates are arranged in the horizontal direction in the fire bed as in Patent Document 1, as shown in FIG. 4, along the inclined surface. There is an inclined stoker type incinerator provided with a fire bed 103.

  FIG. 5 is an explanatory diagram for explaining how dust is stirred in an inclined stoker-type incinerator. As shown in FIG. 5, since the fire bed is arranged along the inclined surface, a force that is conveyed to the downstream side by gravity works on the upper portion of the garbage 114. On the other hand, in the lower part of the garbage 114, a force is conveyed so as to be conveyed upstream by the movement of the plurality of movable grate 108. By being conveyed in the opposite direction between the upper part and the lower part, the garbage is efficiently agitated and effectively dispersed on the fire bed. That is, in the inclined stoker-type incinerator, the dust is evenly distributed on the fire bed, which is advantageous from the viewpoint of combustion efficiency.

  However, in the tilted stoker-type incinerator, it is extremely difficult to stabilize the scaffold when assembling the scaffold on the fire bed. This is considered to be due to the following reason.

  In the stoker-type incinerator, a movable grate provided movably with respect to the furnace is used as described above. When the foundation of the scaffold is a movable grate, the movable grate may move due to the weight of the scaffold, and the assembled scaffold tends to become unstable.

  Further, in a stoker-type incinerator, normally, as shown in FIG. 2, a plurality of movable grate and a plurality of fixed grate are alternately arranged in the furnace length direction. Adjacent movable grate and fixed grate partially overlap. There will be a step between the overlapping part and the non-overlapping part. Thereby, stability is impaired compared with the case where a fire bed is a flat surface.

  Furthermore, in an inclined stoker-type incinerator, a plurality of movable grate and a plurality of fixed grate are arranged along an inclined surface. A movable grate support (movable frame) that supports a plurality of movable grate also extends along the inclined surface, and its moving direction also follows the inclined surface. Therefore, when a weight is applied to the movable grate support, the weight is also decomposed in the moving direction of the movable grate support, and the movable grate becomes easy to move. As a result, the plurality of movable grate supported by the movable grate support is also easy to move. Therefore, it is more difficult to assemble the scaffold stably on the inclined surface than when a plurality of movable grate and a plurality of fixed grate are arranged along the horizontal plane.

  That is, in the tilted stoker-type incinerator, the point where the movable grate moves, the step where the movable grate and the fixed type grate cause a step on the ground below the scaffold, and the movable grate Since the moving direction is inclined with respect to the horizontal plane, the scaffold is remarkably difficult to assemble because it is affected by gravity.

  Accordingly, an object of the present invention is to provide a technique capable of stably assembling a scaffold in an inclined stoker-type incinerator.

  In the following, means for solving the problem will be described using reference numerals with parentheses used in [Best Mode for Carrying Out the Invention]. These symbols are added in order to clarify the correspondence between the description of [Claims] and the description of the best mode for carrying out the invention. ] Should not be used for interpretation of the technical scope of the invention described in the above.

  The method for assembling a scaffold according to the present invention includes a grate (5, 6) arranged along an inclined surface that is inclined with respect to a horizontal plane, and the grate (5, 6) includes a plurality of fixed-type fires. It is a method for assembling a scaffold in a stoker-type incinerator comprising a lattice (6) and a plurality of movable grate (5) provided movably with respect to a plurality of fixed type grate (6). In this method of assembling a scaffold, a plurality of movable grate (6) is supported by a movable grate support (7) provided below the grate. The movable grate support (7) is movable relative to the plurality of fixed grate (5). This method of assembling the scaffold includes: (A): a step of fixing the movable grate support (7); and (B): a step of assembling a scaffold on the grate after the step (A). It has.

  According to this method, the movable grate support (7) is fixed in the step (A). As a result, the plurality of movable grate (5) supported by the movable grate support (7) is fixed to the plurality of fixed grate (6). As a result, when assembling the scaffold in step (B), the base grate (5, 6) is not moved, and the scaffold can be assembled stably.

  Here, from one viewpoint, in the step (A), it is preferable to fix the movable grate support (7) by disposing the stoppers (17, 39).

  In the stoker-type incinerator, the movable grate support (7) is provided so as to move up and down along a plane parallel to the inclined surface, and the movable grate support ( 7) When the end frame (16) provided on the lower extension in the moving direction of 7) is provided, the step (A) includes: (A-1); lower end of the movable grate support (7) It is preferable to include a step of disposing the first stopper (17) between the end frame (16) and the end frame (16).

  According to this method, the clearance between the movable grate support (7) and the end frame (16) can be eliminated by arranging the first stopper (17). Thereby, in the movable grate support (7), the downward movement along the inclined surface is restricted. As a result, it is possible to prevent the movable grate support (7) from moving downward due to gravity or weight of the scaffold.

  In addition, the stoker-type incinerator further moves by receiving a driving device (13) that generates a driving force for moving the movable grate support (7), and the driving force is movable. In the case of including a connecting mechanism (14) for connecting the driving device (13) and the movable grate support (7) so as to be transmitted to the grate support (7), from a viewpoint, the step (A) (A-2); a step of disposing the second stopper (39) between the coupling mechanism (14) and the stoker-restricted hardware (18) provided on the extension of the movement direction of the coupling mechanism (14). It is preferable to contain.

  Here, the drive device (13) includes a hydraulic cylinder (19) and a cylinder rod (26) extending from the hydraulic cylinder (19) and reciprocating, and the coupling mechanism (14) is connected to the drive unit base on one end side. Connected to the first shaft (30) fixed to the frame (18), connected to the tip of the cylinder rod (26) at the other end, and further to the movable grate support (7 ) Side yoke (28, 29), and when the yoke (28, 29) is rotatable around the first axis (30), (A-2); 39) is preferably arranged such that the rotational movement of the yoke (28, 29) is limited.

  Thus, the movement of the coupling mechanism (14) can be limited by disposing the second stopper (39) between the coupling mechanism (14) and the stoker-restricted hardware (38). As a result, the movement of the movable grate support (7) coupled to the coupling mechanism (14) is also limited, and each movable grate (5) can be fixed.

  In addition, the drive device (13) generates a driving force by hydraulic pressure, a hydraulic cylinder (19), piping parts (20, 21) for supplying and discharging oil into the hydraulic cylinder (19), and a piping part (20, 21) provided with the valve portion (22) provided in (20), the step (A) includes: (A-3); supplying the oil to the hydraulic cylinder (19) and the valve portion (22); It is preferable to include a step of closing so that the discharge is blocked.

  According to this method, since supply and discharge of oil to the hydraulic cylinder (19) are interrupted, no movement occurs in the drive device (13). As a result, the movement of the coupling mechanism (14) and the movable grate support (7) is also restricted, and each movable grate (5) can be fixed.

  In the above assembly scaffold assembly method, from another viewpoint, the step (B) includes (B-1); a step of fixing and installing the base material on the grate (5, 6), The base member includes a plate portion (36) and a protrusion (37) provided so as to extend vertically upward from the plate portion (36) when installed on the grate (5, 6). , (B-2); After the step (B-1), the cylindrical single pipe pipe (34) is inserted on the base member, and the protrusion (37) is inserted inside the single pipe (34). Thus, it is preferable to include a step of installing.

  In still another aspect of the method of assembling the scaffolding described above, the step (B) includes: (B-3); a step of fixing and installing the base member on the grate (5, 6); The base member includes a plate portion (36) and a projection portion (37) extending from the plate portion (36), and the projection portion (37) is formed so that an angle between the projection portion (37) and the plate portion (36) is variable. After the steps (B-4) and (B-3), the cylindrical single pipe pipe (34) is placed on the base member, and the protrusion (37) is the single pipe pipe (34). It is preferable to provide the step of installing so that it may be inserted inside.

  According to this method, in the base member, the angle formed by the protrusion (37) and the plate (36) is variable, so that the grate (5, 6) is inclined with respect to the horizontal plane. Even if it did, it can extend a protrusion part (37) to a perpendicular direction correctly. By extending the protrusion (37) accurately in the vertical direction, the single pipe (34) can be accurately extended in the vertical direction, and the scaffold can be assembled stably.

  In the above-described method for assembling a scaffold, when each movable grate (5) is in contact with each adjacent fixed grate (6) so as to form a step, the step (B) includes (B -5); a step of fitting the base member into the step portion, and the base member is bent so as to correspond to the step of each movable grate (6) and each fixed grate (5) And a protrusion (37) provided so as to extend vertically from the bent portion of the plate (36) and face vertically upward when the base member is fitted into the stepped portion. (B-6); After the step (B-5), the cylindrical single pipe pipe (34) is formed on the base member, and the protrusion (37) is formed on the single pipe pipe (34). It is preferable to provide the process of installing so that it may be inserted inside.

  According to this method, since the base member is bent so as to correspond to the step, the base member can be installed so as to be fitted into the step portion. As a result, the base member can be stabilized and installed on the grate (5, 6), and the scaffold can be assembled stably.

  In the above-described method of assembling the scaffolding, from another viewpoint, the step (B) includes (B-7); a hemispherical protective cap (35) at one end of the cylindrical single pipe (34). And (B-8); installing the single pipe (34) with the protective cap (35) attached on the grate (5, 6) so as to extend vertically upward. Is preferred.

  Another embodiment of the method for assembling the scaffold according to the present invention includes a grate (5, 6) arranged along an inclined surface inclined with respect to a horizontal plane, and the grate (5, 6) is a plurality of movable pieces. A construction in a stoker type incinerator comprising a mold grate (5) and a plurality of fixed grate (6), each movable grate (5) being movable relative to each fixed grate (6) It is a method of assembling a scaffold. This method of assembling the scaffolding includes a step of assembling the scaffolding on the grate (5, 6) so as not to shift the scaffolding.

  According to the present invention, a scaffold can be stably assembled in an inclined stoker-type incinerator.

  Embodiments of the present invention will be described with reference to the drawings. This embodiment is a method of assembling a scaffold for assembling a scaffold on a grate in an inclined stoker-type incinerator.

(Inclined stoker type incinerator)
First, a configuration of an inclined stoker-type incinerator in which a scaffold is assembled by the method of assembling a construction scaffold according to the present embodiment will be described.

  FIG. 6 is a side view showing a schematic configuration of an inclined stoker-type incinerator. As shown in FIG. 6, the inclined stoker-type incinerator includes a hopper 1, a chute 2, a feeder unit 3, a furnace 4, a grate unit (5, 6), a movable grate support 7, and a wind box. 9, a clinker roller 10, an ash chute 11, an ash extrusion device 12, a hydraulic unit 13, a coupling mechanism 14, a shifting chute 15, an end frame 16, and a drive unit base frame 18.

  The furnace interior 4 is a space for burning garbage. The furnace interior 4 is formed by being surrounded by a furnace wall. Although the upper part of the inside 4 of a furnace is connected to the mechanism for processing waste gas, those illustrations are omitted.

  The grate parts (5, 6) form the floor of the furnace 4. Garbage is burned on the grate (5, 6) during combustion. The grate parts (5, 6) are inclined with respect to the horizontal plane as a whole. Hereinafter, the vertical direction along the inclined surface of the grate portion (5, 6) is referred to as the furnace length direction. The angle between the furnace length direction and the horizontal plane is, for example, 20 ° to 26 °. Although not shown, the grate part (5, 6) is provided with a path (for example, a through hole) for allowing combustion air to pass from the lower side of the grate part toward the upper side (furnace inside). ing.

  The grate portion (5, 6) includes a plurality of movable grate 5 and a plurality of fixed grate 6. Each of the plurality of movable grate 5 is configured to be movable in the furnace length direction. On the other hand, each of the plurality of fixed grate 6 is fixed to the furnace frame so that movement in at least the furnace length direction is restricted.

  The hopper 1 is a part that receives garbage. The hopper 1 is connected to the feeder unit 3 via the chute 2. The feeder unit 3 is a part for extruding garbage thrown in from the hopper 1 into the furnace 4. The feeder unit 3 is connected to the furnace 4 above the upper end of the grate unit (5, 6). The feeder unit 3 pushes out the dust received from the hopper 1 into the furnace unit 4, and the grate unit (5, 6). ). The ash chute 11 is provided in order to discharge the ash of garbage burned in the grate part (5, 6). The ash chute 11 is connected to an ash extrusion device 12. The ash extrusion device 12 has a mechanism for extruding ash to the outside. A clinker roller 10 is provided between the ash chute 11 and the grate portion (5, 6). The clinker roller 10 is provided to send the incineration ash generated in the grate portion (5, 6) to the ash chute 11.

  The wind box 9 is provided below the grate portion (5, 6). The wind box 9 is provided in order to send air (combustion air) for burning garbage into the furnace 4. The wind box 9 is connected at its lower end side to a combustion air supply mechanism (not shown). The combustion air is generated by the combustion air supply mechanism, is sent to the grate part (5, 6) through the wind box 9, and further passes through the combustion air provided in the grate part (5, 6). It is sent to the grate part (5, 6) via the route for Thereby, the garbage put on the grate part (5, 6) burns.

  In this inclined stoker-type incinerator, waste is introduced from the hopper 1 and accumulated in the feeder unit 3 through the chute 2. Garbage accumulated in the feeder unit 3 is pushed out into the furnace 4 by the feed ram and falls to the upper end of the grate unit (5, 6). In the grate portion (5, 6), garbage is conveyed downstream while burning. The ash generated by the combustion of garbage is sent to the ash chute 11, falls down the ash chute 11, and is sent to the ash extrusion device 12. And it is discharged | emitted outside by an ash extrusion apparatus.

  The movable grate support 7 supports a plurality of movable grate 5. The movable grate support 7 is disposed below the grate portion (5, 6). The movable grate support 7 is connected to the lower end of each of the plurality of movable grate 5 and supports each movable grate 5. The movable grate support 7 extends in a zigzag manner in a direction substantially parallel to the furnace length direction. The movable grate support 7 is supported on a plurality of support rollers 8. The plurality of support rollers 8 are generally arranged in a direction parallel to the furnace length direction. The movable grate support 7 can move in parallel with the furnace length direction by moving on the plurality of support rollers 8. When the movable grate support 7 moves, each movable grate 5 also moves along the furnace length direction.

  The end frame 16 is a wall provided so as to partition the region where the movable grate support 7 is disposed from the ash chute 11. On the lower extension of the moving direction of the movable grate support 7, an end frame 16 is provided. A clinker roller 10 is placed on the end frame 16. The end frame 16 forms a wall surface 16-1 on the movable grate support 7 side. A clearance is provided between the movable grate support 7 and the wall surface 16-1 so as not to contact the end frame 16 even if the movable grate support 7 moves.

  The hydraulic unit 13 is a device for generating a driving force for moving the movable grate support 7. The hydraulic unit 13 is connected to the upper end portion of the movable grate support 7 via a coupling mechanism 14.

  The coupling mechanism 14 is provided to transmit the driving force generated by the hydraulic unit 13 to the movable grate support 7. The driving force generated by the hydraulic unit 13 is transmitted to the movable grate support 7 via the coupling mechanism 14, thereby moving the movable grate support 7 in parallel with the furnace length direction.

  The drive unit base frame 18 is provided below the coupling mechanism 14. The drive unit base frame 18 is for supporting the coupling mechanism 14 and is fixed.

  Then, the structure of a grate part (5, 6) is demonstrated in detail.

  The grate portion (5, 6) includes a plurality of movable grate 5 and a plurality of fixed grate 6. In the furnace length direction, a plurality of movable grate 5 and a plurality of fixed grate 6 are alternately arranged.

  FIG. 7 is an enlarged side view of the grate portion (5, 6). Each of the plurality of movable grate 5 is supported by a movable grate support 7 at the lower end and extends from the lower end toward the upstream side. Each movable grate 5 has a back surface 5-1, a front end surface 5-2, a contact surface 5-3, and a flat surface 5-4. Each movable grate 5 is bent on the upstream side, and is in contact with and supported by each fixed type grate 6 on the upstream side at the contact surface 5-3. Moreover, in the back surface 5-1, the fixed grate 6 adjacent on the downstream side is supported. The front end surface 5-2 rises obliquely upward from the contact surface 5-2. The flat surface 5-4 is formed between the front end surface 5-2 and the back surface 5-1, and is substantially parallel to the horizontal plane.

  The shape of each of the plurality of fixed grate 6 is also substantially the same as the shape of each movable grate 5, and includes a back surface 6-1, a front end surface 6-2, a contact surface 6-3, and a flat surface 6. -4. However, it is assumed that each fixed grate 6 is supported at its lower end by a support frame (not shown) fixed to the furnace frame. Each fixed grate 6 is supported by its support frame, so that movement in the furnace length direction is restricted.

  Each movable grate 5 and each fixed grate 6 adjacent in the furnace length direction partially overlap each other. Therefore, although the grate portion (5, 6) is inclined in the furnace length direction as a whole, a step is generated between each adjacent movable grate 5 and each fixed grate 6.

  When the movable grate support 7 moves along the furnace length direction, each movable grate 5 also moves along the furnace length direction. At this time, if dust is present on the grate portion (5, 6), the lower portion of the dust is pushed up by the movement of the front end face 5-2. On the other hand, the upper part of garbage is moved to the downstream side along the furnace length direction by gravity. Therefore, the dust is efficiently stirred and distributed with a uniform thickness on the grate portion (5, 6).

  Next, the structure of the hydraulic unit 13 and the coupling mechanism 14 will be described in detail. FIG. 8 is a schematic diagram for explaining the structures of the hydraulic unit 13 and the coupling mechanism 14.

  First, the configuration of the hydraulic unit 13 will be described. The hydraulic unit 13 includes a piston 39, a tank 25, a pump 24, a pipe 21, a pipe 20, a valve 22, an electromagnetic control valve 23, a hydraulic cylinder 19, and a cylinder rod 26. The hydraulic cylinder 19 has a cylindrical shape and is divided into two chambers by a piston 39. The piston 39 is slidably provided in the hydraulic cylinder 19. The cylinder rod 26 is connected to the piston 39 at one end and extends from the inside of the hydraulic cylinder 19 to the outside. The cylinder rod 26 reciprocates in the direction indicated by R1 in the drawing. A chamber on the cylinder rod 26 side of the hydraulic cylinder 19 is connected to an electromagnetic control valve 23 via a pipe 20. On the other hand, the chamber opposite to the cylinder rod 26 is also connected to the electromagnetic control valve 23 via the pipe 21. The electromagnetic control valve 23 is connected to both the pump 24 and the tank 25 via piping. The pump 24 is connected to the tank 25 via a pipe. A valve 22 is provided in the middle of the pipe 20.

  When the hydraulic unit 13 is operating, the valve 22 is opened. Oil is supplied to and discharged from the hydraulic cylinder 19 by the pump 24. The oil supply direction is controlled by the electromagnetic control valve 23. Due to the hydraulic pressure of the oil supplied to the hydraulic cylinder 19, the piston 19 moves and the cylinder rod 26 reciprocates in the R1 direction.

  The drive unit base frame 18 is for supporting the coupling mechanism 14 and is fixed.

  Then, the structure of the connection mechanism 14 is demonstrated. The coupling mechanism 14 is disposed on the drive unit base frame 18. The coupling mechanism 14 includes a first coupling tool 27, yokes (28, 29), a second coupling tool 31, a coupling rod 32, a third coupling tool 33, and a first shaft member 30.

  The yoke (28, 29) includes a first yoke portion 28 and a second yoke portion 29. The first yoke portion 28 and the second yoke portion 29 are integrally formed.

The second yoke portion 29 is connected to the first shaft member 30 at the lower end thereof. The first shaft member 30 is disposed on the drive unit base frame 18 so as to extend in the furnace width direction (direction perpendicular to the paper surface). The second yoke portion 29 is connected to the first shaft member 30 so as to be rotatable about the first shaft member 30. The rotation direction of the second yoke portion 29 is indicated by R2 in FIG. The position of the first shaft member 30 is fixed with respect to the drive unit base frame 18. In other words, the second yoke portion 29 is rotatable around an axis fixed to the drive unit base frame 18. The second yoke portion 29 is connected to the second connector 31 at its upper end. The second connector 31 is connected to the movable grate support 7 via a connecting rod 32 and a third connector 33.
Further, the first yoke portion 28 extends from the central portion of the second yoke portion 29 toward the tip of the cylinder rod 26. The first yoke portion 28 is connected to the tip of the cylinder rod 26 via the first connector 27.

  In addition, a stoker-restricted hardware 38 is fixed on the drive unit base frame 18. The stalker limit hardware 38 is arranged to prevent the yoke (28, 29) from rotating too much in the R2 direction.

  The connection mechanism 14 fulfills the function of transmitting the driving force generated by the hydraulic unit 13 to the movable grate support 7 with the above-described configuration. That is, it is assumed that the cylinder rod 26 reciprocates in the R1 direction in the hydraulic unit 13. Then, the yokes (28, 29) rotate in the R2 direction around the first shaft member 30 as an axis. The rotational movement of the yoke (28, 29) is transmitted to the movable grate support 7. Since the movable grate support 7 is supported by a plurality of support rollers 8 arranged in parallel to the furnace length direction, when the yoke (28, 29) is rotated, the movable grate support body 7 is parallel to the furnace length direction. Exercise.

(Assembling method of the scaffolding)
Then, the assembly method of the construction scaffold when assembling a scaffold with respect to the inclination type stoker type incinerator mentioned above is demonstrated. As described above, in the tilted stoker-type incinerator, garbage moves in both the upstream direction and the downstream direction on the grate portion (5, 6). Accordingly, the dust is uniformly distributed on the grate portion (5, 6), and the dust can be burned efficiently. However, since the movable grate support 7 is inclined, the weight applied to the movable grate 5 is also decomposed in the moving direction of the movable grate support 7 when the scaffold is assembled. As a result, the movable grate support 7 and each movable grate 6 are easy to move, making it difficult to stabilize and assemble the scaffold. Therefore, in the present embodiment, each movable grate 6 is fixed before the scaffold is assembled. Specifically, according to the flowchart shown in FIG. 9, each movable grate 6 is fixed and the scaffold is assembled.

Step S1: Installation of stopper First, a stopper is installed so that the movement of the movable grate support 7 is restricted. For example, the stopper is preferably arranged at a position described below.

  FIG. 10 is an explanatory diagram for explaining an example of the arrangement position of the stopper. As shown in FIG. 10, a stopper (hereinafter referred to as a first stopper 17) is disposed between the movable grate support 7 and the end frame 16. The first stopper is disposed so as to be in contact with the end frame 16 at one end 17-1 and to be in contact with the downstream end portion in the moving direction of the movable grate support 7 at the other end 17-2. By disposing the first stopper 17 in this way, the movement of the movable grate support 7 in the downstream direction is limited and fixed. Further, when the first stopper 17 has a mechanism 17-3 capable of adjusting the length from one end 17-1 to the other end 17-2, the movable grate support 7 and the end frame 16 are provided. Easy to place between. In the case of using such a member, after the one end 17-1 side is fixed to the end frame 16 with screws or the like, the length from the one end 17-1 to the other end 17-2 is increased. Then, the other end 17-2 comes into contact with the movable grate support 7 and pushes it up. Thereby, the 1st stopper 17 can be easily arrange | positioned so that the moving direction to the downstream side of the movable grate support body 7 may be restrict | limited.

  FIG. 11 is an explanatory diagram for explaining another example of the arrangement positions of the stoppers. As shown in FIG. 11, a stopper (hereinafter referred to as a second stopper 39) is disposed between the yoke (28, 29) of the coupling mechanism 14 and the stalker limit hardware 38. It is assumed that the movable grate support 7 moves in the downstream direction when the yoke (28, 29) rotates in one direction R2-1 of the rotation direction R2. The second stopper 39 is disposed between the second yoke portion 29 and the stalker limiting metal 38 so that the rotation of the yoke (28, 29) in the R2-1 direction is limited. By arranging the second stopper 39 in this way, the movement of the yoke (28, 29) in the R2-1 direction is prevented, and the movable grate support 7 is prevented from moving in the downstream direction.

Step S2: Close the valve of the hydraulic unit Subsequently, the valve 22 of the hydraulic unit 13 is closed. Thereby, the supply and discharge of oil to the hydraulic cylinder 19 are shut off, and the movement of the cylinder rod 26 extending from the hydraulic cylinder 19 is limited. As a result, the movement of the movable grate support 7 is limited both in the downstream direction and in the upstream direction.

Steps S3 and S4: Assembling the scaffold Subsequently, the scaffold is assembled on the grate portion (5, 6). When assembling the scaffolding, it is expected that an operator will step on each movable grate 5 or install a scaffold on each movable grate 5 to add weight to each movable grate 5 Is done. However, in this embodiment, since the movement of the movable grate support 7 in the downstream direction is limited by disposing the stopper in step S1, each movable grate 5 is controlled by the weight of the worker or the scaffold. It is prevented from moving. Furthermore, since the movement of the movable grate support 7 is also restricted by closing the valve 22 of the hydraulic unit 13 in step S2, the movement of the movable grate support 7 is more restricted. By closing the valve 22 in addition to the stopper, the movement of the movable grate support 7 is synergistically limited and each movable grate 5 is firmly fixed. Therefore, even if an operator steps on each movable grate 5 or each movable grate 5 becomes a base of the scaffold, each movable grate 5 does not move, and the scaffold can be assembled stably.

  In assembling the scaffold, as shown in FIG. 12, a cylindrical single pipe 34 is used. In the example shown in FIG. 12, the plurality of single pipes 34 are placed on the grate portions (5, 6) so as to form a lattice shape. Moreover, the other single pipe 34 is installed so that it may extend in the vertical direction in the position where the single pipe 34 laid down cross | intersects. The intersecting single pipes 34 are connected by a clamp (not shown) or the like. A protective cap 35 for preventing displacement is attached to the end of the single pipe 34 that has been laid down. As shown in FIG. 13, the protective cap 35 includes a hemispherical hemispherical part 35-1 and a protrusion 35-2 extending from the flat part of the hemispherical part 35. The protective cap 35 is attached to the end of the single pipe 34 by the protrusion 35-2 being inserted into the single pipe 34.

  In installing the single pipe 34 extending in the vertical direction, first, a base material is installed (step S3). The base material is a member for supporting the single pipe 34 in the vertical direction. After the base material is installed, the single pipe 34 is installed on the base material so as to extend in the vertical direction (step S4). Then, a floor etc. are installed so that it may be supported by the single pipe 34, and a scaffold is assembled.

  A base material installed to support the single pipe 34 will be described. The base material is not particularly limited as long as it can support the single pipe 34 in the vertical direction, but it is preferable to use a member exemplified below.

  FIG. 14 shows an example in which the base material is arranged on the flat surface 6-4 of the fixed grate 6. This base material has a flat plate portion 36 and a protrusion 37 extending perpendicularly from the plate portion 36. Such a base material is disposed on the flat surface 6-4. In step S <b> 4, the single pipe 34 is supported by the base material by inserting the protrusion 37 inside the single pipe 34. Since the flat surface 6-4 is substantially parallel to the horizontal plane, the weight of the scaffold is received by the fixed grate 6. Since the movement of the fixed grate 6 is originally limited and does not move, a stable scaffold can be assembled.

  FIG. 15 shows an example of a base material with an angle adjustment function. The base material has a flat plate portion 36 and a protrusion 37 extending from the plate portion 36. The projecting portion 37 is attached so that the angle formed with the plate portion 36 can be adjusted. Thus, if the base material which can adjust the angle of the projection part 37 is used, even if it arrange | positions a base material on an inclined surface, it will become possible to support the single pipe 34 in a perpendicular direction.

  FIG. 16 is a diagram illustrating another example of the base material. The base material shown in the example of FIG. 16 has a bent plate portion 36 and a protruding portion 37 extending from the bent portion of the plate portion 36. The plate portion 36 is bent in accordance with the angle formed by the front end surface 5-2 of the movable grate 5 and the back surface 6-1 of the fixed grate 6. The protruding portion 37 is provided so as to extend vertically upward when the plate portion 36 is disposed in a recess formed by the front end surface 5-2 and the back surface 6-1. If this base material is disposed in a recess formed by the movable grate 5 and the fixed grate 6, the protrusion 37 extends vertically upward. Since the base material is supported by two surfaces of the front end surface 5-2 and the back surface 6-1, the position thereof is difficult to shift. 16 shows an example in which the base material is disposed in the recess formed by the front end surface 5-2 and the back surface 6-1, but the recess formed by the front end surface 6-2 and the back surface 5-1. The same effect can be obtained even if it is arranged in the position.

  FIG. 17 shows another example in assembling the scaffold (steps S3 and S4). In the example shown in FIG. 17, no base material is installed. Instead, a protective cap 35 as shown in FIG. 13 is attached to the end of the single pipe 34 extending in the vertical direction. Then, the single pipe 34 to which the protective cap 35 is attached is disposed on the concave portion formed by the front end surface 5-2 and the rear surface 6-1 so that the protective cap 35 side is on the lower side. The single pipe 34 is stabilized by being supported by at least two surfaces of the front end surface 5-2 and the back surface 6-1 in the protective cap 35, and is disposed so as to extend vertically upward. Similarly to the example shown in FIG. 16, the single pipe 34 may be disposed on the recess formed by the front end surface 6-2 and the back surface 5-1.

  As described above, according to the erection scaffold assembling method of the present embodiment, the movement of the movable grate support 7 in the downstream direction is limited by the arrangement of the stopper, so that the weight of the movable grate 5 is increased. Even if added, the movable grate 5 is difficult to shift. Thereby, the motion of the grate part (5, 6) used as the foundation | substrate at the time of assembling a scaffold is suppressed, and a scaffold can be assembled stably.

  Further, by closing the valve of the hydraulic unit 13, the movement of the cylinder rod 26 of the hydraulic unit 13 is restricted, and thereby the movement of the movable grate support 7 is restricted. Thereby, the movement of the movable grate 5 supported by the movable grate support 7 can be limited.

  It should be noted that even if only one of the step of disposing the stopper (step S1) and the step of closing the valve of the hydraulic unit 13 (step S2) is performed, the movement of the movable grate support 7 is limited. There is an effect. However, if both are carried out, the movement in the downstream direction is surely restricted by the stopper and the movement in the upstream direction is also restricted by step S2, so that the movable grate support 7 is synergistic. It becomes difficult to move. Moreover, when implementing both, it is more preferable to arrange | position a stopper before closing the valve | bulb 22 (step S2). When placing the stopper, if the valve 22 is in an open state, the movable grate support 7 can easily move, so that the stopper can be easily placed.

  Further, according to the present embodiment, when the scaffold is assembled, the single pipe 34 can be stably extended vertically upward by supporting the single pipe 34 using the base material having the protrusions 37. . Further, the single pipe 34 can be extended vertically upward by attaching the protective cap 35 to the single pipe 34 without using a base material.

It is a side view which shows the structure of the conventional stoker type incinerator. It is the schematic which shows the structure of the firebed of the conventional stoker type incinerator. It is the schematic which shows a state when the scaffold for an inspection is assembled on a fire bed. It is the schematic which shows the structure of an inclination type stoker type incinerator. It is explanatory drawing for demonstrating a mode that refuse is stirred in an inclination type stoker type incinerator. It is a side view which shows the structure of the inclination type stoker-type incinerator in embodiment. It is a side view which shows the structure of a grate part. It is the schematic which shows the structure of a hydraulic unit and a connection mechanism. It is a flowchart which shows the assembly method of a construction scaffold. It is explanatory drawing for demonstrating the arrangement position of a 1st stopper. It is explanatory drawing for demonstrating the arrangement position of a 2nd stopper. It is explanatory drawing for demonstrating the scaffold assembled. It is explanatory drawing for demonstrating the structure of a protective cap. It is explanatory drawing which shows the installation structure of a single pipe. It is explanatory drawing which shows the installation structure of a single pipe. It is explanatory drawing which shows the installation structure of a single pipe. It is explanatory drawing which shows the installation structure of a single pipe.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hopper 2 Chute 3 Feeder part 4 Furnace 5 Movable grate 5-1 Back 5-2 Front end surface 5-3 Contact surface 6 Fixed type grate 6-1 Back 6-2 Front end surface 6-3 Contact surface DESCRIPTION OF SYMBOLS 7 Movable grate support body 8 Support roller 9 Wind box 10 Clinker roller 11 Ash chute 12 Ash extrusion apparatus 13 Hydraulic unit 14 Connection mechanism 15 Shifting chute 16 End frame 17 1st stopper 18 Drive part base frame 19 Hydraulic cylinder 20 Piping 21 Piping 22 Valve 23 Electromagnetic control valve 24 Hydraulic pump 25 Tank 26 Cylinder rod 27 1st connecting tool 28 1st yoke part 29 2nd yoke part 30 1st shaft 31 2nd connecting tool 32 Connecting rod 33 3rd connecting tool 34 Single pipe Pipe 35 Protective cap 35-1 Hemisphere part 35-2 Protrusion part 36 Plate part 37 Protrusion part 38 Stoker Restricted hardware 39 Second stopper 101 Hopper 102 Pusher 103 Fire bed 104 Main ash chute 105 Wind box 106 Air supply mechanism 107 Fixed grate 108 Movable grate 109 Movable frame 110 Fixed frame 111 Scaffold 112 Single pipe pipe 113 Work floor 114 Garbage

Claims (14)

It comprises a grate portion arranged along an inclined surface that is inclined with respect to a horizontal plane, and the grate portion is a plurality of fixed fixed grate and a furnace length that is the vertical direction along the inclined surface A plurality of movable grate that is movable in a direction, and the plurality of movable grate are supported from below the grate unit by a movable grate support that is movable in parallel with the furnace length direction. A method for assembling a scaffold in a stoker-type incinerator,
(A) fixing the movable grate support so that movement is restricted;
(B) After the step (A), a step of assembling a scaffold on the grate portion;
Equipped with,
The method for assembling a construction scaffold in a stoker type incinerator for fixing the movable grate support by disposing a stopper in the step (A) . A method for assembling a scaffold in the stoker-type incinerator according to claim 1 ,
The stoker-type incinerator further includes an end frame provided on a lower extension in the moving direction of the movable grate support,
The step (A)
(A-1) A method for assembling a construction scaffold in a stoker-type incinerator including a step of arranging a first stopper between a lower end portion of the movable grate support and the end frame. A method for assembling a construction scaffold in the stoker-type incinerator according to claim 1 or 2 ,
The stoker-type incinerator further comprises:
A driving device for generating a driving force for moving the movable grate support;
Construction in a stoker-type incinerator comprising a connecting mechanism that moves by receiving the driving force and connects the driving device and the movable grate support so that the driving force is transmitted to the movable grate support How to assemble the scaffold. A method for assembling a construction scaffold in the stoker-type incinerator according to claim 3 ,
The step (A)
(A-2) Installation in a stalker-type incinerator including the step of disposing a second stopper between the coupling mechanism and a stalker-restricted hardware fixed and provided on the extension of the movement direction of the coupling mechanism How to assemble the scaffold. A method for assembling a construction scaffold in the stoker-type incinerator according to claim 4 ,
The drive device includes a hydraulic cylinder, and a cylinder rod extending from the hydraulic cylinder and reciprocating.
The connection mechanism includes a yoke connected to the first shaft on one end side, connected to the tip of the cylinder rod on the other end side, and connected to the movable grate support side on the other end side; Here, the yoke is rotatable around the first axis, and the first axis is fixed to a fixed drive unit base frame,
In the step (A-2), a method for assembling a construction scaffold in a stoker-type incinerator in which the second stopper is arranged so that the rotational movement of the yoke is limited. A method for assembling a construction scaffold in the stoker-type incinerator according to claim 3 ,
The drive device includes a hydraulic cylinder that generates the driving force by hydraulic pressure, a pipe part for supplying and discharging oil into the hydraulic cylinder, and a valve part provided in the pipe part,
The step (A)
(A-3) A method for assembling a construction scaffold in a stoker-type incinerator comprising a step of closing the valve portion so that supply and discharge of oil to and from the hydraulic cylinder are blocked. A method for assembling a scaffold in the stoker-type incinerator according to any one of claims 1 to 6 ,
The step (B)
(B-1) a step of installing a base member on the grate unit, wherein the base member is vertically above the plate unit when the base member is installed on the grate unit and a protrusion provided et the to extend,
(B-2) After the step (B-1), a stoker comprising a step of installing the single pipe pipe on the base member so that the protrusion is inserted into the single pipe pipe. Of assembling the scaffolding in an incinerator. A method for assembling a scaffold in the stoker-type incinerator according to any one of claims 1 to 6 ,
The step (B)
(B-3) installing a base member on the grate portion, wherein the base member includes a plate-like portion and a protrusion extending from the plate-like portion, and the protrusion is the plate-like Connected to the plate-like part so that the angle formed by the part is variable,
(B-4) After the step (B-3), a step of installing a cylindrical single pipe pipe on the base member so that the protrusion is inserted inside the single pipe pipe; For assembling a scaffold in a stoker-type incinerator equipped with A method for assembling a scaffold in the stoker-type incinerator according to any one of claims 1 to 6 ,
The plurality of movable grate and the plurality of fixed grate are alternately arranged in the furnace length direction, and each of the plurality of movable grate adjacent in the furnace length direction and the plurality of fixed grate There is a step between each of the
The step (B)
(B-5) a step of fitting a base member into the stepped portion, wherein the base member is folded from a plate portion corresponding to the shape of the step, and the bent portion of the plate portion. extend, and a protrusion provided on earthenware pots by turns vertically upward when the base member is fitted to the stepped portion,
(B-6) After the step (B-5), installing a cylindrical single pipe pipe on the base so that the protrusion is inserted inside the single pipe. A method for assembling a scaffold in a stoker-type incinerator. A method for assembling a scaffold in the stoker-type incinerator according to any one of claims 1 to 6 ,
The step (B)
(B-7) attaching a hemispherical protective cap to one end of the cylindrical single pipe pipe;
(B-8) A method of assembling a scaffold in a stoker-type incinerator, comprising: installing the single pipe pipe to which the protective cap is attached so as to extend vertically upward on the grate portion.   It comprises a grate portion arranged along an inclined surface that is inclined with respect to a horizontal plane, and the grate portion is a plurality of fixed fixed grate and a furnace length that is the vertical direction along the inclined surface A plurality of movable grate that is movable in a direction, and the plurality of movable grate are supported from below the grate unit by a movable grate support that is movable in parallel with the furnace length direction. A method for assembling a scaffold in a stoker-type incinerator,
(A) fixing the movable grate support so that movement is restricted;
(B) After the step (A), a step of assembling a scaffold on the grate portion;
Comprising
  The stoker-type incinerator further comprises:
    A driving device for generating a driving force for moving the movable grate support;
    A movement mechanism that receives the driving force and includes a connecting mechanism that connects the driving device and the movable grate support so that the driving force is transmitted to the movable grate support;
  The step (A) includes a step of disposing a second stopper between the coupling mechanism and a stalker limit hardware fixedly provided on an extension of the movement direction of the coupling mechanism.
A method for assembling a scaffold in a stoker-type incinerator.   It comprises a grate portion arranged along an inclined surface that is inclined with respect to a horizontal plane, and the grate portion is a plurality of fixed fixed grate and a furnace length that is the vertical direction along the inclined surface A plurality of movable grate that is movable in a direction, and the plurality of movable grate are supported from below the grate unit by a movable grate support that is movable in parallel with the furnace length direction. A method for assembling a scaffold in a stoker-type incinerator,
(A) fixing the movable grate support so that movement is restricted;
(B) After the step (A), a step of assembling a scaffold on the grate portion;
Comprising
  The stoker-type incinerator further comprises:
    A driving device for generating a driving force for moving the movable grate support;
    A movement mechanism that receives the driving force and includes a connecting mechanism that connects the driving device and the movable grate support so that the driving force is transmitted to the movable grate support;
  The drive device includes a hydraulic cylinder that generates the driving force by hydraulic pressure, a pipe part for supplying and discharging oil into the hydraulic cylinder, and a valve part provided in the pipe part,
  The step (A) includes a step of closing the valve portion so that supply and discharge of oil to and from the hydraulic cylinder are blocked.
A method for assembling a scaffold in a stoker-type incinerator.   It comprises a grate portion arranged along an inclined surface that is inclined with respect to a horizontal plane, and the grate portion is a plurality of fixed fixed grate and a furnace length that is the vertical direction along the inclined surface A plurality of movable grate that is movable in a direction, and the plurality of movable grate are supported from below the grate unit by a movable grate support that is movable in parallel with the furnace length direction. A method for assembling a scaffold in a stoker-type incinerator,
(A) fixing the movable grate support so that movement is restricted;
(B) After the step (A), a step of assembling a scaffold on the grate portion;
Comprising
  The plurality of movable grate and the plurality of fixed grate are alternately arranged in the furnace length direction, and each of the plurality of movable grate adjacent in the furnace length direction and the plurality of fixed grate There is a step between each of the
  The step (B)
    A step of fitting a base member into the stepped portion, wherein the base member extends from a bent plate portion corresponding to the shape of the stepped portion, and the bent portion of the plate portion; And a protrusion provided so as to face vertically upward when fitted into the stepped portion,
    After the step of fitting the base member, a step of installing a cylindrical single pipe pipe on the base so that the protruding portion is inserted inside the single pipe pipe.
A method for assembling a scaffold in a stoker-type incinerator.   It comprises a grate portion arranged along an inclined surface that is inclined with respect to a horizontal plane, and the grate portion is a plurality of fixed fixed grate and a furnace length that is the vertical direction along the inclined surface A plurality of movable grate that is movable in a direction, and the plurality of movable grate are supported from below the grate unit by a movable grate support that is movable in parallel with the furnace length direction. A method for assembling a scaffold in a stoker-type incinerator,
(A) fixing the movable grate support so that movement is restricted;
(B) After the step (A), a step of assembling a scaffold on the grate portion;
Comprising
  The step (B)
    Attaching a hemispherical protective cap to one end of the cylindrical single pipe;
    Installing the single pipe pipe to which the protective cap is attached so as to extend vertically upward on the grate portion.
A method for assembling a scaffold in a stoker-type incinerator.

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